Power loom in order to obtain brocades therefrom



Nov. l 9, 1929.

C'. PIZZORNO POWER LOOM IN ORDER TO OBTAIN BROCADES THEREFROM Filed Aug. 13. 1924 3 Sheets-Sheet 1 Nov. 19, 1929. c. PlzzoRNo 1,736,360

POWER LOOM IN ORDER TO OBTAIN BROCADES THEREFROM med Aug. 1s. 1924 s sheets-Sheet 2 P1330 rm:

C. PIZZORNO Nov. 19, 1929.

POWER LOOM IN ORDER TO OBTAIN BROCADES THEREFROM 5 Sheets-Sheet 3 Filed Aug..13. 1924 www www N www www Patented Nov. 19, 1929 UNITED STATES CARLO PIZZORNO, OF GENOA, ITALY POWERLOOM IN ORDER TO OBTAXN BROCADES THEREFROM Application filed August 13, 1924, Serial No. 731,839, and in Italy August 20, `1923.

The invention relates to brocading devices for mechanical Weaving looms provided with jacquard mechanism. According to the invention, the brocade hatten comprises a stationary bar and a vertically and horizontally movable bar on Which are arranged several groups of bobbins with different colored threads in rotatable bobbin holders, the bobbins of di'erent color of one group of bobbins Working with the same Warp threads.

The new device has the advantage that embroidery patterns having tvvo and more different colors can be produced in a simple manner. The device is particularly adapted for such patterns, vvherein the same design is repeated in different colors. By shifting the movable bar in a horizontal direction from the jacquard machine, the bobbin havingl the desired color is selected and placed over thosewarp threads Where the embroidery pattern is to be provided. By shifting the movable bar vertically and turning the bobbin holders, the brocade thread is then put on the Warp threads.

The invention is illustrated in the accompanying drawing by Way of example.

Fig. 1 is a front elevation of a Weaving loom provided with a jacquard machine, whereon the new brocade device is applied;

Fig. 2 is the front elevationof the driving gear for the bobbin holder on an enlarged scale;

Fig. ,3 is a side elevation of this driving gear;

Fig. l 1s the front elevation of the movable and the stationary part ofthe brocade hatten; Fig. 5 is a front elevation of the bobbin with its holder;

Fig. 5a is a fragmentary longitudinal section through the bobbin and the bearing therefor' showing in detail the mounting of the bobbin spindle. A

Fig. 6 is a plan thereof;

Fig. 7 is the front elevation of the slotted member belonging to the driving gear according to Fig. 2.

VThe bobbins, which receive the brocade threads, are designated 256 and 261 (Figs. 1

andv 4). The bobbins are ,operated by a pulley, shown in Figs. 2 and 3 and comprising two side discs 200 and 201 and a central disc These discs are rotatable on a pivot 203 mounted in a holder or support 204. A friction disc 22'?, which is fixed to the holder or support 204- and can be pressed against the disc 200 by means of the nut 228 and the Washer 229, enables a regulation of the pulley rotation.

The disc 200 is provided Withdiametrically opposer recesses or grooves 223, 224C; furthermore, the same disc has recessesor grooves and. 226, which are also diametrically opposed.

The central disc 202 hastwo grooves or recesses 2% and 215, in which apin 213 tits, which. isV carried or supported by two parallel chains208- These chains engage the central disc 202. Oneend of the chain is fastened to a spring 209 by means of the hook 210 Whereas at the other end of the chain a hook 212 is provided for a rope211.

rlhe side disc 201 has a crank arm 205 and a crank pin 206, the vlatter coacting With a rod 207, which transmits during the rotation of the pulley a reciprocatory movement to the rack for moving or operating the brocade shuttle. f Y

On the holder 204, a support 219 is provided Wherein a pivot 218 is mounted. This pivot carries a paWl 216 Whose tooth 221 can in the recesses orl grooves 223, 224i of the disc 200. A spring 220 Wound on the pin 218' tends to turn the paWl 216 so that the tooth 22,1 is liftedv out of the recesses of the disc 200 (Fig-2). A spring 217 connects one .end of the pavvl to the double chain 208.

A further pavvl 222 is rotatable on the pivot 218. lt engages under the action of its oWn Weigl'it in the grooves 225, 226 of the disc 200.

When theparts are in the position shown in Fig. 2 and the rope'211 is tensioned,the pin 213 engaging in the recess 214 vproduces a semi-revolution of the pulley. By means of the spring V217V the chain simultaneously actuates the p'aWl 216 against the/pressure of the spring 220 so that the tooth 221 engages in the groove 22st of the vdisc 200. This tooth Y prevents a further rotation of the disc beyond 1800.

During this semi-revolution of the pulley, the crank 205 and the rod 207 are moved from right to left (Fig. 2).

As soon as the tension of the rope 211 slackens, the chain is returned under the action of the springs 209 to its original position, the tooth 221 being lifted out of the groove 224 by the spring 220. The pulley must however maintain its position, because the pa-wl 222, which in consequence of its own weight always bears on the periphery of the disc 200, engages in the groove 226 of this risc. During the next p-ull of the rope 211, the pin 213 of the double chain 208 engages in the recess 215 of the central disc 202 and again turns the pulley through an angle of 1800. The stroke is again limited by the tooth 221, whereas during the return of the rope 211, the pulley is held in the new position by the pawl 222.

The rope 211 adapted to move the double chain 208 is secured at its upper end to the member 230, which is provided with slots 231, through which pins 232 extend, which allow of an upward and downward movement of the slotted member 230 and simultaneously limit its stroke. The pins 232 are secured to a plate, which is carried by a support 77 of the brocade loom. A hook 234 is Vadapted to swing at 233 on the upper end of the slotted member 230. The hook carries a balance weight 235 and is adjusted by a rope 236 of the jacquard device. If this hook is only under the iniiuence of the balance weight 235, it will be turned from the position (shown in Fig. 1) counter-clockwise so that it comes out of the range of a lever 73 vwhich is operated from the lower 'shaft of the loom by means of a rope. If, however, the rope 236 is tensioned, the hook will be swung clockwise, so that it comes into the pat-h of the lever `73, as is shown in Figs. 1 and 7. As soon as the lever 73 ascends, the slotted member 230 and also the rope 211 are raised.

The whole of the movable and the stationary part of the brocade batten comprises a movable bar 237, having the bearings 238 provided with pivots 239, a holder or support 240 secured to one end of the batten, a lug or projection 241 on which one end of a spring 242 engages, which connects the bar 237 to the stationary part 243 of the batten by means of a projection 244 on which the other end of the spring 242 engages.

On the balls 245 arranged between the bar 237 and the stationary part 243 ofthe batten, the bar 237 can be shifted horizontally with respect to the stationary part 243 of the batten, said bar being guided by projections 246 of the batteri.

The spring 96, which is secured to the transverse bar 97 of the jacquard machine, carries two ropes 247, to which a shuttle bar 248 is suspended, which is movable both vertically and horizontally. The bar is connected to bar 237 by means of the forked supports 249, which receive between their forked ends the pivots 239 of the bearings 238. The bar 248 carries on three cylindrical pins 250 the rack 251, which has three longitudinal slots 252 wherein the pins 250 enaO'e.

g 'he rack 251 is moved horizontally by the rod 207 of the above-described driving gear and engages successively the cylindrical proj ections 253 of the shuttles 254 each of which carries the bearing 255 of its bobbin 256.

The bobbin 256 lies parallel to the plane of the carrier 254 (Fig. 5).

The bobbin 256 includes a spindle 260 one end of which is axially movable into rotatable position in one end of the bearing 255 being preferably tapered as shown in Fig. 5a to center the spindle in position. The opposite terminal of the spindle is axially movable and rotatable in an opening 255a formed in the opposite end of the bearing 255the opening 255a being normally closed by a sliding ring or collar 258 movable upon the last mentioned end of the bearing 255. A spring 259 is interposed between the end of the bearing 255 and the bobbin 256 and normally retains the tapered end 260et of the spindle in proper bearing relation with the adjacent end of the bearing 255, while a second spring 257v secured to the bearing 255 normally retains the ring 258 in such position that its extremity 258@L normally closes the opening 255 and prevents such axial displacement ofthe spindle 260 as will cause disengagement of its tapered extremity from the bearing.y However, when it is desired to remove the bobbin the ring 258 vis moved outwardly against the tensionA of the spring 257 thereby uncovering the opening 255 and permitting the spindle 260 to be moved axially against the tension of the spring 259, thus disengaging the tapered extremity260a from the bearing and upon subsequent axial movement of the spindle in the opposite direction causing withdrawal of the spindle from the opening 255a and the removal of the bobbin.

By means of this brocade device, patterns having two and more different colors can be produced on mechanical looms with a jacquard machine. For this purpose, the bobbins of two shuttles, constituting one of a. plurality of groups, are provided, for example, one 256 with a red thread and the other 261 with a green thread. Thus the brocading is done on the same warp threads, first with the red bobbin and then after displacement of the shuttle bar with thel green bobbin.

If by means of the rope 262 coming from the jacquard machine and connected to the bar. 237, the green bobbin has been brought over the warp threads stipulated by the patp ressing the ring` against the spool so as to tern, the green part of the embroidery patprevent the latter 'from moving out of its tern will be woven.

The bobbin 261 Winds support, and a spring holding the spindle of the green thread around the warp threads, the spool.

which are lifted by the jacquard machine. It the rope 263 is then tensioned, which is connected on the one hand to the jacquard machine and on the other hand to the pawl 264 linked at 265 to the stationary part 243 of the batten, the pawl 264C will 'release the bar 237 as soon as it is removed from the adjustable tooth 266 so that the bar 237 may be shifted to the right under the tension of the spring 242. In this second position of the bar 237, the bobbin 256 With the red thread passes over the raised Warp threads, winds its thread around these Warp threads and completes the pattern. When the one bobbin comes into action the other runs idle.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is:

l. In a mechanical brocade weaving loom, groups of rotatable horse-shoe shaped brocade shuttles provided with thread spools, the shuttles of each group having different colored threads, the latter being adapted to be lowered alternately under the raised chain threads in dependency of a jacquard machine, according to the two color brocade pattern to be produced on the base and connected with the latter by the base weft threads, a drive consisting of a wheel provided with lateral discs and a central disc, a crank carried by one disc, a rod driven by said crank and connected with the brocade batteri, a double chain arranged about one of the discs for driving the latter, a spring engaging with the upper cross bar of the loom and connected with one end of the chain, and a cable attached to the other end of the chain.

2. A loom as claimed in claim 1 characterized by the provision of a pin on the chain, teeth on the last mentioned disc engaged by the pin, a lever having a tooth at one end and a pawl-lilre tooth at the other end actuated by a spring arranged between it and the chain.

3. A loom as claimed in claim l characterized by the provision of a plate mounted on the upper part of the loom connected with the said cable and having longitudinal slots therein, pins engaging said slots, a hook carried by the plate, a counter weight on said hook, said hook being pivotally secured to the plate and rotatable under the action of the said cable. y

4. A loom as claimed in claim 1 characterized by the provision of a brocade batten consisting of a movable rail, and a stationary rail, a spring connecting the two rails, a bar movable horizontally and vertically which has a horizontal slidable raclr, said shuttles engaging said rack and each including a spool parallel to the shuttle bar, a ring, a spring CARLO PIZZORNO. 

